A major challenge in the development of diesel filter systems is the selection of the appropriate filter medium in terms of its geometric configuration (cell density, wall thickness) and its physical properties (porosity, pore size). This selection aims to achieve minimization of the filter pressure drop as well as more efficient filter regeneration.The aim of the present work is to provide engineering criteria to support the design and selection of suitably sized wall-flow monolithic filters for diesel particulate control. The approach followed in the present paper is to employ a comprehensive, experimentally validated mathematical framework taking into account the effects of filter structure (cell density, filter dimensions, wall thickness, permeability), soot cake microstructure and its evolution under varying exhaust flow conditions, as well as ash accumulation, in order to derive optimal configurations and sizing criteria of monolithic filters that can be used for specific applications. A major result concerns the derivation of nomographs giving the optimum cell density for honeycomb filters under the combined constraints of given filter volume, exhaust flow, temperature, as well as different soot and ash loadings inside the filter. These nomographs are expected to facilitate the task of selection and reliable life-cycle deployment of diesel particulate filters.


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    Titel :

    The Optimum Cell Density for Wall-Flow Monolithic Filters: Effects of Filter Permeability, Soot Cake Structure and Ash Loading


    Weitere Titelangaben:

    Sae Technical Papers



    Kongress:

    SAE 2004 World Congress & Exhibition ; 2004



    Erscheinungsdatum :

    2004-03-08




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    2004-01-1133 The Optimum Cell Density for Wall-Flow Monolithic Filters: Effects of Filter Permeability, Soot Cake Structure and Ash Loading

    Konstandopoulos, A. G. / Kladopoulou, E. / Society of Automotive Engineers | British Library Conference Proceedings | 2004


    Measurement and Intra-Layer Modeling of Soot Density and Permeability in Wall-flow Filters

    Konstantinou, A. / Koltsakis, G. C. / Haralampous, O. A. et al. | SAE Technical Papers | 2006


    Measurement and intra-layer modeling of soot density and permeability on wall-flow filters

    Koltsakis,G.C. / Konstantinou,A. / Haralampous,O.A. et al. | Kraftfahrwesen | 2006